Effect of Vertical Electromagnetic Stirring on the Grain Refinement of A356 Aluminum Alloy Inoculated by Al-5Ti-B
| Periodical | Solid State Phenomena (Volumes 116 - 117) |
|---|---|
| Main Theme | Semi-Solid Processing of Alloys and Composites |
| Edited by | C.G. Kang, S.K. Kim and S.Y. Lee |
| Pages | 344-349 |
| DOI | 10.4028/www.scientific.net/SSP.116-117.344 |
| Citation | Zhao Yang et al., 2006, Solid State Phenomena, 116-117, 344 |
| Online since | October, 2006 |
| Authors | Zhao Yang, J.W. Bae, C.G. Kang |
| Keywords | Al5TiB, Electromagnetic Stirring (EMS), Grain Refinement, Semi-Solid Metal Processing |
| Price | US$ 28,- |
In this paper, the influence of electromagnetic stirring on the grain size of A356 alloy inoculated by Al-5Ti-B was investigated. It is found that when stirring is applied at the same time with Al-5Ti-B, the inoculation effect will be disabled. X-ray determination and SEM observation show that stirring hinders the deposition of TiB2 particles; consequently hinder the formation of TiAl3 particles, which were proved to be the nucleus of primary α aluminum phase. If the stirring time is short, the grain size will be abnormally coarse. This experiment also confirms that the grain refinement of rheocasting is caused by dendrite fracture instead of modified nucleation.